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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    package org.apache.commons.beanutils;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>    import java.beans.IntrospectionException;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.beans.PropertyDescriptor;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.lang.ref.Reference;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.lang.ref.SoftReference;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.lang.ref.WeakReference;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.lang.reflect.Method;<a name="line.26"></a>
<FONT color="green">027</FONT>    import java.lang.reflect.Modifier;<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>    <a name="line.29"></a>
<FONT color="green">030</FONT>    /**<a name="line.30"></a>
<FONT color="green">031</FONT>     * A MappedPropertyDescriptor describes one mapped property.<a name="line.31"></a>
<FONT color="green">032</FONT>     * Mapped properties are multivalued properties like indexed properties<a name="line.32"></a>
<FONT color="green">033</FONT>     * but that are accessed with a String key instead of an index.<a name="line.33"></a>
<FONT color="green">034</FONT>     * Such property values are typically stored in a Map collection.<a name="line.34"></a>
<FONT color="green">035</FONT>     * For this class to work properly, a mapped value must have<a name="line.35"></a>
<FONT color="green">036</FONT>     * getter and setter methods of the form<a name="line.36"></a>
<FONT color="green">037</FONT>     * &lt;p&gt;&lt;code&gt;get&lt;strong&gt;Property&lt;/strong&gt;(String key)&lt;code&gt; and<a name="line.37"></a>
<FONT color="green">038</FONT>     * &lt;p&gt;&lt;code&gt;set&lt;strong&gt;Property&lt;/strong&gt;(String key, Object value)&lt;code&gt;,<a name="line.38"></a>
<FONT color="green">039</FONT>     * &lt;p&gt;where &lt;code&gt;&lt;strong&gt;Property&lt;/strong&gt;&lt;/code&gt; must be replaced<a name="line.39"></a>
<FONT color="green">040</FONT>     * by the name of the property.<a name="line.40"></a>
<FONT color="green">041</FONT>     * @see java.beans.PropertyDescriptor<a name="line.41"></a>
<FONT color="green">042</FONT>     *<a name="line.42"></a>
<FONT color="green">043</FONT>     * @author Rey Francois<a name="line.43"></a>
<FONT color="green">044</FONT>     * @author Gregor Rayman<a name="line.44"></a>
<FONT color="green">045</FONT>     * @version $Revision: 806915 $ $Date: 2009-08-23 01:50:23 +0100 (Sun, 23 Aug 2009) $<a name="line.45"></a>
<FONT color="green">046</FONT>     */<a name="line.46"></a>
<FONT color="green">047</FONT>    <a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>
<FONT color="green">049</FONT>    public class MappedPropertyDescriptor extends PropertyDescriptor {<a name="line.49"></a>
<FONT color="green">050</FONT>        // ----------------------------------------------------- Instance Variables<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>        /**<a name="line.52"></a>
<FONT color="green">053</FONT>         * The underlying data type of the property we are describing.<a name="line.53"></a>
<FONT color="green">054</FONT>         */<a name="line.54"></a>
<FONT color="green">055</FONT>        private Reference mappedPropertyTypeRef;<a name="line.55"></a>
<FONT color="green">056</FONT>    <a name="line.56"></a>
<FONT color="green">057</FONT>        /**<a name="line.57"></a>
<FONT color="green">058</FONT>         * The reader method for this property (if any).<a name="line.58"></a>
<FONT color="green">059</FONT>         */<a name="line.59"></a>
<FONT color="green">060</FONT>        private MappedMethodReference mappedReadMethodRef;<a name="line.60"></a>
<FONT color="green">061</FONT>    <a name="line.61"></a>
<FONT color="green">062</FONT>        /**<a name="line.62"></a>
<FONT color="green">063</FONT>         * The writer method for this property (if any).<a name="line.63"></a>
<FONT color="green">064</FONT>         */<a name="line.64"></a>
<FONT color="green">065</FONT>        private MappedMethodReference mappedWriteMethodRef;<a name="line.65"></a>
<FONT color="green">066</FONT>    <a name="line.66"></a>
<FONT color="green">067</FONT>        /**<a name="line.67"></a>
<FONT color="green">068</FONT>         * The parameter types array for the reader method signature.<a name="line.68"></a>
<FONT color="green">069</FONT>         */<a name="line.69"></a>
<FONT color="green">070</FONT>        private static final Class[] STRING_CLASS_PARAMETER = new Class[]{String.class};<a name="line.70"></a>
<FONT color="green">071</FONT>    <a name="line.71"></a>
<FONT color="green">072</FONT>        // ----------------------------------------------------------- Constructors<a name="line.72"></a>
<FONT color="green">073</FONT>    <a name="line.73"></a>
<FONT color="green">074</FONT>        /**<a name="line.74"></a>
<FONT color="green">075</FONT>         * Constructs a MappedPropertyDescriptor for a property that follows<a name="line.75"></a>
<FONT color="green">076</FONT>         * the standard Java convention by having getFoo and setFoo<a name="line.76"></a>
<FONT color="green">077</FONT>         * accessor methods, with the addition of a String parameter (the key).<a name="line.77"></a>
<FONT color="green">078</FONT>         * Thus if the argument name is "fred", it will<a name="line.78"></a>
<FONT color="green">079</FONT>         * assume that the writer method is "setFred" and the reader method<a name="line.79"></a>
<FONT color="green">080</FONT>         * is "getFred".  Note that the property name should start with a lower<a name="line.80"></a>
<FONT color="green">081</FONT>         * case character, which will be capitalized in the method names.<a name="line.81"></a>
<FONT color="green">082</FONT>         *<a name="line.82"></a>
<FONT color="green">083</FONT>         * @param propertyName The programmatic name of the property.<a name="line.83"></a>
<FONT color="green">084</FONT>         * @param beanClass The Class object for the target bean.  For<a name="line.84"></a>
<FONT color="green">085</FONT>         *        example sun.beans.OurButton.class.<a name="line.85"></a>
<FONT color="green">086</FONT>         *<a name="line.86"></a>
<FONT color="green">087</FONT>         * @exception IntrospectionException if an exception occurs during<a name="line.87"></a>
<FONT color="green">088</FONT>         *              introspection.<a name="line.88"></a>
<FONT color="green">089</FONT>         */<a name="line.89"></a>
<FONT color="green">090</FONT>        public MappedPropertyDescriptor(String propertyName, Class beanClass)<a name="line.90"></a>
<FONT color="green">091</FONT>                throws IntrospectionException {<a name="line.91"></a>
<FONT color="green">092</FONT>    <a name="line.92"></a>
<FONT color="green">093</FONT>            super(propertyName, null, null);<a name="line.93"></a>
<FONT color="green">094</FONT>            <a name="line.94"></a>
<FONT color="green">095</FONT>            if (propertyName == null || propertyName.length() == 0) {<a name="line.95"></a>
<FONT color="green">096</FONT>                throw new IntrospectionException("bad property name: " +<a name="line.96"></a>
<FONT color="green">097</FONT>                        propertyName + " on class: " + beanClass.getClass().getName());<a name="line.97"></a>
<FONT color="green">098</FONT>            }<a name="line.98"></a>
<FONT color="green">099</FONT>    <a name="line.99"></a>
<FONT color="green">100</FONT>            setName(propertyName);<a name="line.100"></a>
<FONT color="green">101</FONT>            String base = capitalizePropertyName(propertyName);<a name="line.101"></a>
<FONT color="green">102</FONT>            <a name="line.102"></a>
<FONT color="green">103</FONT>            // Look for mapped read method and matching write method<a name="line.103"></a>
<FONT color="green">104</FONT>            Method mappedReadMethod = null;<a name="line.104"></a>
<FONT color="green">105</FONT>            Method mappedWriteMethod = null;<a name="line.105"></a>
<FONT color="green">106</FONT>            try {<a name="line.106"></a>
<FONT color="green">107</FONT>                try {<a name="line.107"></a>
<FONT color="green">108</FONT>                    mappedReadMethod = getMethod(beanClass, "get" + base,<a name="line.108"></a>
<FONT color="green">109</FONT>                            STRING_CLASS_PARAMETER);<a name="line.109"></a>
<FONT color="green">110</FONT>                } catch (IntrospectionException e) {<a name="line.110"></a>
<FONT color="green">111</FONT>                    mappedReadMethod = getMethod(beanClass, "is" + base,<a name="line.111"></a>
<FONT color="green">112</FONT>                            STRING_CLASS_PARAMETER);<a name="line.112"></a>
<FONT color="green">113</FONT>                }<a name="line.113"></a>
<FONT color="green">114</FONT>                Class[] params = { String.class, mappedReadMethod.getReturnType() };<a name="line.114"></a>
<FONT color="green">115</FONT>                mappedWriteMethod = getMethod(beanClass, "set" + base, params);<a name="line.115"></a>
<FONT color="green">116</FONT>            } catch (IntrospectionException e) {<a name="line.116"></a>
<FONT color="green">117</FONT>                /* Swallow IntrospectionException<a name="line.117"></a>
<FONT color="green">118</FONT>                 * TODO: Why?<a name="line.118"></a>
<FONT color="green">119</FONT>                 */<a name="line.119"></a>
<FONT color="green">120</FONT>            }<a name="line.120"></a>
<FONT color="green">121</FONT>            <a name="line.121"></a>
<FONT color="green">122</FONT>            // If there's no read method, then look for just a write method <a name="line.122"></a>
<FONT color="green">123</FONT>            if (mappedReadMethod == null) {<a name="line.123"></a>
<FONT color="green">124</FONT>                mappedWriteMethod = getMethod(beanClass, "set" + base, 2);<a name="line.124"></a>
<FONT color="green">125</FONT>            }<a name="line.125"></a>
<FONT color="green">126</FONT>    <a name="line.126"></a>
<FONT color="green">127</FONT>            if ((mappedReadMethod == null) &amp;&amp; (mappedWriteMethod == null)) {<a name="line.127"></a>
<FONT color="green">128</FONT>                throw new IntrospectionException("Property '" + propertyName +<a name="line.128"></a>
<FONT color="green">129</FONT>                        "' not found on " +<a name="line.129"></a>
<FONT color="green">130</FONT>                        beanClass.getName());<a name="line.130"></a>
<FONT color="green">131</FONT>            }<a name="line.131"></a>
<FONT color="green">132</FONT>            mappedReadMethodRef  = new MappedMethodReference(mappedReadMethod);<a name="line.132"></a>
<FONT color="green">133</FONT>            mappedWriteMethodRef = new MappedMethodReference(mappedWriteMethod);<a name="line.133"></a>
<FONT color="green">134</FONT>            <a name="line.134"></a>
<FONT color="green">135</FONT>            findMappedPropertyType();<a name="line.135"></a>
<FONT color="green">136</FONT>        }<a name="line.136"></a>
<FONT color="green">137</FONT>    <a name="line.137"></a>
<FONT color="green">138</FONT>    <a name="line.138"></a>
<FONT color="green">139</FONT>        /**<a name="line.139"></a>
<FONT color="green">140</FONT>         * This constructor takes the name of a mapped property, and method<a name="line.140"></a>
<FONT color="green">141</FONT>         * names for reading and writing the property.<a name="line.141"></a>
<FONT color="green">142</FONT>         *<a name="line.142"></a>
<FONT color="green">143</FONT>         * @param propertyName The programmatic name of the property.<a name="line.143"></a>
<FONT color="green">144</FONT>         * @param beanClass The Class object for the target bean.  For<a name="line.144"></a>
<FONT color="green">145</FONT>         *        example sun.beans.OurButton.class.<a name="line.145"></a>
<FONT color="green">146</FONT>         * @param mappedGetterName The name of the method used for<a name="line.146"></a>
<FONT color="green">147</FONT>         *          reading one of the property values.  May be null if the<a name="line.147"></a>
<FONT color="green">148</FONT>         *          property is write-only.<a name="line.148"></a>
<FONT color="green">149</FONT>         * @param mappedSetterName The name of the method used for writing<a name="line.149"></a>
<FONT color="green">150</FONT>         *          one of the property values.  May be null if the property is<a name="line.150"></a>
<FONT color="green">151</FONT>         *          read-only.<a name="line.151"></a>
<FONT color="green">152</FONT>         *<a name="line.152"></a>
<FONT color="green">153</FONT>         * @exception IntrospectionException if an exception occurs during<a name="line.153"></a>
<FONT color="green">154</FONT>         *              introspection.<a name="line.154"></a>
<FONT color="green">155</FONT>         */<a name="line.155"></a>
<FONT color="green">156</FONT>        public MappedPropertyDescriptor(String propertyName, Class beanClass,<a name="line.156"></a>
<FONT color="green">157</FONT>                                        String mappedGetterName, String mappedSetterName)<a name="line.157"></a>
<FONT color="green">158</FONT>                throws IntrospectionException {<a name="line.158"></a>
<FONT color="green">159</FONT>    <a name="line.159"></a>
<FONT color="green">160</FONT>            super(propertyName, null, null);<a name="line.160"></a>
<FONT color="green">161</FONT>    <a name="line.161"></a>
<FONT color="green">162</FONT>            if (propertyName == null || propertyName.length() == 0) {<a name="line.162"></a>
<FONT color="green">163</FONT>                throw new IntrospectionException("bad property name: " +<a name="line.163"></a>
<FONT color="green">164</FONT>                        propertyName);<a name="line.164"></a>
<FONT color="green">165</FONT>            }<a name="line.165"></a>
<FONT color="green">166</FONT>            setName(propertyName);<a name="line.166"></a>
<FONT color="green">167</FONT>    <a name="line.167"></a>
<FONT color="green">168</FONT>            // search the mapped get and set methods<a name="line.168"></a>
<FONT color="green">169</FONT>            Method mappedReadMethod = null;<a name="line.169"></a>
<FONT color="green">170</FONT>            Method mappedWriteMethod = null;<a name="line.170"></a>
<FONT color="green">171</FONT>            mappedReadMethod =<a name="line.171"></a>
<FONT color="green">172</FONT>                getMethod(beanClass, mappedGetterName, STRING_CLASS_PARAMETER);<a name="line.172"></a>
<FONT color="green">173</FONT>    <a name="line.173"></a>
<FONT color="green">174</FONT>            if (mappedReadMethod != null) {<a name="line.174"></a>
<FONT color="green">175</FONT>                Class[] params = { String.class, mappedReadMethod.getReturnType() };<a name="line.175"></a>
<FONT color="green">176</FONT>                mappedWriteMethod = <a name="line.176"></a>
<FONT color="green">177</FONT>                    getMethod(beanClass, mappedSetterName, params);<a name="line.177"></a>
<FONT color="green">178</FONT>            } else {<a name="line.178"></a>
<FONT color="green">179</FONT>                mappedWriteMethod =<a name="line.179"></a>
<FONT color="green">180</FONT>                    getMethod(beanClass, mappedSetterName, 2);<a name="line.180"></a>
<FONT color="green">181</FONT>            }<a name="line.181"></a>
<FONT color="green">182</FONT>            mappedReadMethodRef  = new MappedMethodReference(mappedReadMethod);<a name="line.182"></a>
<FONT color="green">183</FONT>            mappedWriteMethodRef = new MappedMethodReference(mappedWriteMethod);<a name="line.183"></a>
<FONT color="green">184</FONT>    <a name="line.184"></a>
<FONT color="green">185</FONT>            findMappedPropertyType();<a name="line.185"></a>
<FONT color="green">186</FONT>        }<a name="line.186"></a>
<FONT color="green">187</FONT>    <a name="line.187"></a>
<FONT color="green">188</FONT>        /**<a name="line.188"></a>
<FONT color="green">189</FONT>         * This constructor takes the name of a mapped property, and Method<a name="line.189"></a>
<FONT color="green">190</FONT>         * objects for reading and writing the property.<a name="line.190"></a>
<FONT color="green">191</FONT>         *<a name="line.191"></a>
<FONT color="green">192</FONT>         * @param propertyName The programmatic name of the property.<a name="line.192"></a>
<FONT color="green">193</FONT>         * @param mappedGetter The method used for reading one of<a name="line.193"></a>
<FONT color="green">194</FONT>         *          the property values.  May be be null if the property<a name="line.194"></a>
<FONT color="green">195</FONT>         *          is write-only.<a name="line.195"></a>
<FONT color="green">196</FONT>         * @param mappedSetter The method used for writing one the<a name="line.196"></a>
<FONT color="green">197</FONT>         *          property values.  May be null if the property is read-only.<a name="line.197"></a>
<FONT color="green">198</FONT>         *<a name="line.198"></a>
<FONT color="green">199</FONT>         * @exception IntrospectionException if an exception occurs during<a name="line.199"></a>
<FONT color="green">200</FONT>         *              introspection.<a name="line.200"></a>
<FONT color="green">201</FONT>         */<a name="line.201"></a>
<FONT color="green">202</FONT>        public MappedPropertyDescriptor(String propertyName,<a name="line.202"></a>
<FONT color="green">203</FONT>                                        Method mappedGetter, Method mappedSetter)<a name="line.203"></a>
<FONT color="green">204</FONT>                throws IntrospectionException {<a name="line.204"></a>
<FONT color="green">205</FONT>    <a name="line.205"></a>
<FONT color="green">206</FONT>            super(propertyName, mappedGetter, mappedSetter);<a name="line.206"></a>
<FONT color="green">207</FONT>    <a name="line.207"></a>
<FONT color="green">208</FONT>            if (propertyName == null || propertyName.length() == 0) {<a name="line.208"></a>
<FONT color="green">209</FONT>                throw new IntrospectionException("bad property name: " +<a name="line.209"></a>
<FONT color="green">210</FONT>                        propertyName);<a name="line.210"></a>
<FONT color="green">211</FONT>            }<a name="line.211"></a>
<FONT color="green">212</FONT>    <a name="line.212"></a>
<FONT color="green">213</FONT>            setName(propertyName);<a name="line.213"></a>
<FONT color="green">214</FONT>            mappedReadMethodRef  = new MappedMethodReference(mappedGetter);<a name="line.214"></a>
<FONT color="green">215</FONT>            mappedWriteMethodRef = new MappedMethodReference(mappedSetter);<a name="line.215"></a>
<FONT color="green">216</FONT>            findMappedPropertyType();<a name="line.216"></a>
<FONT color="green">217</FONT>        }<a name="line.217"></a>
<FONT color="green">218</FONT>    <a name="line.218"></a>
<FONT color="green">219</FONT>        // -------------------------------------------------------- Public Methods<a name="line.219"></a>
<FONT color="green">220</FONT>    <a name="line.220"></a>
<FONT color="green">221</FONT>        /**<a name="line.221"></a>
<FONT color="green">222</FONT>         * Gets the Class object for the property values.<a name="line.222"></a>
<FONT color="green">223</FONT>         *<a name="line.223"></a>
<FONT color="green">224</FONT>         * @return The Java type info for the property values.  Note that<a name="line.224"></a>
<FONT color="green">225</FONT>         * the "Class" object may describe a built-in Java type such as "int".<a name="line.225"></a>
<FONT color="green">226</FONT>         * The result may be "null" if this is a mapped property that<a name="line.226"></a>
<FONT color="green">227</FONT>         * does not support non-keyed access.<a name="line.227"></a>
<FONT color="green">228</FONT>         * &lt;p&gt;<a name="line.228"></a>
<FONT color="green">229</FONT>         * This is the type that will be returned by the mappedReadMethod.<a name="line.229"></a>
<FONT color="green">230</FONT>         */<a name="line.230"></a>
<FONT color="green">231</FONT>        public Class getMappedPropertyType() {<a name="line.231"></a>
<FONT color="green">232</FONT>            return (Class)mappedPropertyTypeRef.get();<a name="line.232"></a>
<FONT color="green">233</FONT>        }<a name="line.233"></a>
<FONT color="green">234</FONT>    <a name="line.234"></a>
<FONT color="green">235</FONT>        /**<a name="line.235"></a>
<FONT color="green">236</FONT>         * Gets the method that should be used to read one of the property value.<a name="line.236"></a>
<FONT color="green">237</FONT>         *<a name="line.237"></a>
<FONT color="green">238</FONT>         * @return The method that should be used to read the property value.<a name="line.238"></a>
<FONT color="green">239</FONT>         * May return null if the property can't be read.<a name="line.239"></a>
<FONT color="green">240</FONT>         */<a name="line.240"></a>
<FONT color="green">241</FONT>        public Method getMappedReadMethod() {<a name="line.241"></a>
<FONT color="green">242</FONT>            return mappedReadMethodRef.get();<a name="line.242"></a>
<FONT color="green">243</FONT>        }<a name="line.243"></a>
<FONT color="green">244</FONT>    <a name="line.244"></a>
<FONT color="green">245</FONT>        /**<a name="line.245"></a>
<FONT color="green">246</FONT>         * Sets the method that should be used to read one of the property value.<a name="line.246"></a>
<FONT color="green">247</FONT>         *<a name="line.247"></a>
<FONT color="green">248</FONT>         * @param mappedGetter The mapped getter method.<a name="line.248"></a>
<FONT color="green">249</FONT>         * @throws IntrospectionException If an error occurs finding the<a name="line.249"></a>
<FONT color="green">250</FONT>         * mapped property<a name="line.250"></a>
<FONT color="green">251</FONT>         */<a name="line.251"></a>
<FONT color="green">252</FONT>        public void setMappedReadMethod(Method mappedGetter)<a name="line.252"></a>
<FONT color="green">253</FONT>                throws IntrospectionException {<a name="line.253"></a>
<FONT color="green">254</FONT>            mappedReadMethodRef = new MappedMethodReference(mappedGetter);<a name="line.254"></a>
<FONT color="green">255</FONT>            findMappedPropertyType();<a name="line.255"></a>
<FONT color="green">256</FONT>        }<a name="line.256"></a>
<FONT color="green">257</FONT>    <a name="line.257"></a>
<FONT color="green">258</FONT>        /**<a name="line.258"></a>
<FONT color="green">259</FONT>         * Gets the method that should be used to write one of the property value.<a name="line.259"></a>
<FONT color="green">260</FONT>         *<a name="line.260"></a>
<FONT color="green">261</FONT>         * @return The method that should be used to write one of the property value.<a name="line.261"></a>
<FONT color="green">262</FONT>         * May return null if the property can't be written.<a name="line.262"></a>
<FONT color="green">263</FONT>         */<a name="line.263"></a>
<FONT color="green">264</FONT>        public Method getMappedWriteMethod() {<a name="line.264"></a>
<FONT color="green">265</FONT>            return mappedWriteMethodRef.get();<a name="line.265"></a>
<FONT color="green">266</FONT>        }<a name="line.266"></a>
<FONT color="green">267</FONT>    <a name="line.267"></a>
<FONT color="green">268</FONT>        /**<a name="line.268"></a>
<FONT color="green">269</FONT>         * Sets the method that should be used to write the property value.<a name="line.269"></a>
<FONT color="green">270</FONT>         *<a name="line.270"></a>
<FONT color="green">271</FONT>         * @param mappedSetter The mapped setter method.<a name="line.271"></a>
<FONT color="green">272</FONT>         * @throws IntrospectionException If an error occurs finding the<a name="line.272"></a>
<FONT color="green">273</FONT>         * mapped property<a name="line.273"></a>
<FONT color="green">274</FONT>         */<a name="line.274"></a>
<FONT color="green">275</FONT>        public void setMappedWriteMethod(Method mappedSetter)<a name="line.275"></a>
<FONT color="green">276</FONT>                throws IntrospectionException {<a name="line.276"></a>
<FONT color="green">277</FONT>            mappedWriteMethodRef = new MappedMethodReference(mappedSetter);<a name="line.277"></a>
<FONT color="green">278</FONT>            findMappedPropertyType();<a name="line.278"></a>
<FONT color="green">279</FONT>        }<a name="line.279"></a>
<FONT color="green">280</FONT>    <a name="line.280"></a>
<FONT color="green">281</FONT>        // ------------------------------------------------------- Private Methods<a name="line.281"></a>
<FONT color="green">282</FONT>    <a name="line.282"></a>
<FONT color="green">283</FONT>        /**<a name="line.283"></a>
<FONT color="green">284</FONT>         * Introspect our bean class to identify the corresponding getter<a name="line.284"></a>
<FONT color="green">285</FONT>         * and setter methods.<a name="line.285"></a>
<FONT color="green">286</FONT>         */<a name="line.286"></a>
<FONT color="green">287</FONT>        private void findMappedPropertyType() throws IntrospectionException {<a name="line.287"></a>
<FONT color="green">288</FONT>            try {<a name="line.288"></a>
<FONT color="green">289</FONT>                Method mappedReadMethod  = getMappedReadMethod();<a name="line.289"></a>
<FONT color="green">290</FONT>                Method mappedWriteMethod = getMappedWriteMethod();<a name="line.290"></a>
<FONT color="green">291</FONT>                Class mappedPropertyType = null;<a name="line.291"></a>
<FONT color="green">292</FONT>                if (mappedReadMethod != null) {<a name="line.292"></a>
<FONT color="green">293</FONT>                    if (mappedReadMethod.getParameterTypes().length != 1) {<a name="line.293"></a>
<FONT color="green">294</FONT>                        throw new IntrospectionException<a name="line.294"></a>
<FONT color="green">295</FONT>                                ("bad mapped read method arg count");<a name="line.295"></a>
<FONT color="green">296</FONT>                    }<a name="line.296"></a>
<FONT color="green">297</FONT>                    mappedPropertyType = mappedReadMethod.getReturnType();<a name="line.297"></a>
<FONT color="green">298</FONT>                    if (mappedPropertyType == Void.TYPE) {<a name="line.298"></a>
<FONT color="green">299</FONT>                        throw new IntrospectionException<a name="line.299"></a>
<FONT color="green">300</FONT>                                ("mapped read method " +<a name="line.300"></a>
<FONT color="green">301</FONT>                                mappedReadMethod.getName() + " returns void");<a name="line.301"></a>
<FONT color="green">302</FONT>                    }<a name="line.302"></a>
<FONT color="green">303</FONT>                }<a name="line.303"></a>
<FONT color="green">304</FONT>    <a name="line.304"></a>
<FONT color="green">305</FONT>                if (mappedWriteMethod != null) {<a name="line.305"></a>
<FONT color="green">306</FONT>                    Class[] params = mappedWriteMethod.getParameterTypes();<a name="line.306"></a>
<FONT color="green">307</FONT>                    if (params.length != 2) {<a name="line.307"></a>
<FONT color="green">308</FONT>                        throw new IntrospectionException<a name="line.308"></a>
<FONT color="green">309</FONT>                                ("bad mapped write method arg count");<a name="line.309"></a>
<FONT color="green">310</FONT>                    }<a name="line.310"></a>
<FONT color="green">311</FONT>                    if (mappedPropertyType != null &amp;&amp;<a name="line.311"></a>
<FONT color="green">312</FONT>                            mappedPropertyType != params[1]) {<a name="line.312"></a>
<FONT color="green">313</FONT>                        throw new IntrospectionException<a name="line.313"></a>
<FONT color="green">314</FONT>                                ("type mismatch between mapped read and write methods");<a name="line.314"></a>
<FONT color="green">315</FONT>                    }<a name="line.315"></a>
<FONT color="green">316</FONT>                    mappedPropertyType = params[1];<a name="line.316"></a>
<FONT color="green">317</FONT>                }<a name="line.317"></a>
<FONT color="green">318</FONT>                mappedPropertyTypeRef = new SoftReference(mappedPropertyType);<a name="line.318"></a>
<FONT color="green">319</FONT>            } catch (IntrospectionException ex) {<a name="line.319"></a>
<FONT color="green">320</FONT>                throw ex;<a name="line.320"></a>
<FONT color="green">321</FONT>            }<a name="line.321"></a>
<FONT color="green">322</FONT>        }<a name="line.322"></a>
<FONT color="green">323</FONT>    <a name="line.323"></a>
<FONT color="green">324</FONT>    <a name="line.324"></a>
<FONT color="green">325</FONT>        /**<a name="line.325"></a>
<FONT color="green">326</FONT>         * Return a capitalized version of the specified property name.<a name="line.326"></a>
<FONT color="green">327</FONT>         *<a name="line.327"></a>
<FONT color="green">328</FONT>         * @param s The property name<a name="line.328"></a>
<FONT color="green">329</FONT>         */<a name="line.329"></a>
<FONT color="green">330</FONT>        private static String capitalizePropertyName(String s) {<a name="line.330"></a>
<FONT color="green">331</FONT>            if (s.length() == 0) {<a name="line.331"></a>
<FONT color="green">332</FONT>                return s;<a name="line.332"></a>
<FONT color="green">333</FONT>            }<a name="line.333"></a>
<FONT color="green">334</FONT>    <a name="line.334"></a>
<FONT color="green">335</FONT>            char[] chars = s.toCharArray();<a name="line.335"></a>
<FONT color="green">336</FONT>            chars[0] = Character.toUpperCase(chars[0]);<a name="line.336"></a>
<FONT color="green">337</FONT>            return new String(chars);<a name="line.337"></a>
<FONT color="green">338</FONT>        }<a name="line.338"></a>
<FONT color="green">339</FONT>    <a name="line.339"></a>
<FONT color="green">340</FONT>        /**<a name="line.340"></a>
<FONT color="green">341</FONT>         * Find a method on a class with a specified number of parameters.<a name="line.341"></a>
<FONT color="green">342</FONT>         */<a name="line.342"></a>
<FONT color="green">343</FONT>        private static Method internalGetMethod(Class initial, String methodName,<a name="line.343"></a>
<FONT color="green">344</FONT>                                                int parameterCount) {<a name="line.344"></a>
<FONT color="green">345</FONT>            // For overridden methods we need to find the most derived version.<a name="line.345"></a>
<FONT color="green">346</FONT>            // So we start with the given class and walk up the superclass chain.<a name="line.346"></a>
<FONT color="green">347</FONT>            for (Class clazz = initial; clazz != null; clazz = clazz.getSuperclass()) {<a name="line.347"></a>
<FONT color="green">348</FONT>                Method[] methods = clazz.getDeclaredMethods();<a name="line.348"></a>
<FONT color="green">349</FONT>                for (int i = 0; i &lt; methods.length; i++) {<a name="line.349"></a>
<FONT color="green">350</FONT>                    Method method = methods[i];<a name="line.350"></a>
<FONT color="green">351</FONT>                    if (method == null) {<a name="line.351"></a>
<FONT color="green">352</FONT>                        continue;<a name="line.352"></a>
<FONT color="green">353</FONT>                    }<a name="line.353"></a>
<FONT color="green">354</FONT>                    // skip static methods.<a name="line.354"></a>
<FONT color="green">355</FONT>                    int mods = method.getModifiers();<a name="line.355"></a>
<FONT color="green">356</FONT>                    if (!Modifier.isPublic(mods) ||<a name="line.356"></a>
<FONT color="green">357</FONT>                        Modifier.isStatic(mods)) {<a name="line.357"></a>
<FONT color="green">358</FONT>                        continue;<a name="line.358"></a>
<FONT color="green">359</FONT>                    }<a name="line.359"></a>
<FONT color="green">360</FONT>                    if (method.getName().equals(methodName) &amp;&amp;<a name="line.360"></a>
<FONT color="green">361</FONT>                            method.getParameterTypes().length == parameterCount) {<a name="line.361"></a>
<FONT color="green">362</FONT>                        return method;<a name="line.362"></a>
<FONT color="green">363</FONT>                    }<a name="line.363"></a>
<FONT color="green">364</FONT>                }<a name="line.364"></a>
<FONT color="green">365</FONT>            }<a name="line.365"></a>
<FONT color="green">366</FONT>    <a name="line.366"></a>
<FONT color="green">367</FONT>            // Now check any inherited interfaces.  This is necessary both when<a name="line.367"></a>
<FONT color="green">368</FONT>            // the argument class is itself an interface, and when the argument<a name="line.368"></a>
<FONT color="green">369</FONT>            // class is an abstract class.<a name="line.369"></a>
<FONT color="green">370</FONT>            Class[] interfaces = initial.getInterfaces();<a name="line.370"></a>
<FONT color="green">371</FONT>            for (int i = 0; i &lt; interfaces.length; i++) {<a name="line.371"></a>
<FONT color="green">372</FONT>                Method method = internalGetMethod(interfaces[i], methodName, parameterCount);<a name="line.372"></a>
<FONT color="green">373</FONT>                if (method != null) {<a name="line.373"></a>
<FONT color="green">374</FONT>                    return method;<a name="line.374"></a>
<FONT color="green">375</FONT>                }<a name="line.375"></a>
<FONT color="green">376</FONT>            }<a name="line.376"></a>
<FONT color="green">377</FONT>    <a name="line.377"></a>
<FONT color="green">378</FONT>            return null;<a name="line.378"></a>
<FONT color="green">379</FONT>        }<a name="line.379"></a>
<FONT color="green">380</FONT>    <a name="line.380"></a>
<FONT color="green">381</FONT>        /**<a name="line.381"></a>
<FONT color="green">382</FONT>         * Find a method on a class with a specified number of parameters.<a name="line.382"></a>
<FONT color="green">383</FONT>         */<a name="line.383"></a>
<FONT color="green">384</FONT>        private static Method getMethod(Class clazz, String methodName, int parameterCount)<a name="line.384"></a>
<FONT color="green">385</FONT>                throws IntrospectionException {<a name="line.385"></a>
<FONT color="green">386</FONT>            if (methodName == null) {<a name="line.386"></a>
<FONT color="green">387</FONT>                return null;<a name="line.387"></a>
<FONT color="green">388</FONT>            }<a name="line.388"></a>
<FONT color="green">389</FONT>    <a name="line.389"></a>
<FONT color="green">390</FONT>            Method method = internalGetMethod(clazz, methodName, parameterCount);<a name="line.390"></a>
<FONT color="green">391</FONT>            if (method != null) {<a name="line.391"></a>
<FONT color="green">392</FONT>                return method;<a name="line.392"></a>
<FONT color="green">393</FONT>            }<a name="line.393"></a>
<FONT color="green">394</FONT>    <a name="line.394"></a>
<FONT color="green">395</FONT>            // No Method found<a name="line.395"></a>
<FONT color="green">396</FONT>            throw new IntrospectionException("No method \"" + methodName +<a name="line.396"></a>
<FONT color="green">397</FONT>                    "\" with " + parameterCount + " parameter(s)");<a name="line.397"></a>
<FONT color="green">398</FONT>        }<a name="line.398"></a>
<FONT color="green">399</FONT>    <a name="line.399"></a>
<FONT color="green">400</FONT>        /**<a name="line.400"></a>
<FONT color="green">401</FONT>         * Find a method on a class with a specified parameter list.<a name="line.401"></a>
<FONT color="green">402</FONT>         */<a name="line.402"></a>
<FONT color="green">403</FONT>        private static Method getMethod(Class clazz, String methodName, Class[] parameterTypes) <a name="line.403"></a>
<FONT color="green">404</FONT>                                               throws IntrospectionException {<a name="line.404"></a>
<FONT color="green">405</FONT>            if (methodName == null) {<a name="line.405"></a>
<FONT color="green">406</FONT>                return null;<a name="line.406"></a>
<FONT color="green">407</FONT>            }<a name="line.407"></a>
<FONT color="green">408</FONT>    <a name="line.408"></a>
<FONT color="green">409</FONT>            Method method = MethodUtils.getMatchingAccessibleMethod(clazz, methodName, parameterTypes);<a name="line.409"></a>
<FONT color="green">410</FONT>            if (method != null) {<a name="line.410"></a>
<FONT color="green">411</FONT>                return method;<a name="line.411"></a>
<FONT color="green">412</FONT>            }<a name="line.412"></a>
<FONT color="green">413</FONT>    <a name="line.413"></a>
<FONT color="green">414</FONT>            int parameterCount = (parameterTypes == null) ? 0 : parameterTypes.length;<a name="line.414"></a>
<FONT color="green">415</FONT>    <a name="line.415"></a>
<FONT color="green">416</FONT>            // No Method found<a name="line.416"></a>
<FONT color="green">417</FONT>            throw new IntrospectionException("No method \"" + methodName +<a name="line.417"></a>
<FONT color="green">418</FONT>                    "\" with " + parameterCount + " parameter(s) of matching types.");<a name="line.418"></a>
<FONT color="green">419</FONT>        }<a name="line.419"></a>
<FONT color="green">420</FONT>    <a name="line.420"></a>
<FONT color="green">421</FONT>        /**<a name="line.421"></a>
<FONT color="green">422</FONT>         * Holds a {@link Method} in a {@link SoftReference} so that it<a name="line.422"></a>
<FONT color="green">423</FONT>         * it doesn't prevent any ClassLoader being garbage collected, but<a name="line.423"></a>
<FONT color="green">424</FONT>         * tries to re-create the method if the method reference has been<a name="line.424"></a>
<FONT color="green">425</FONT>         * released.<a name="line.425"></a>
<FONT color="green">426</FONT>         *<a name="line.426"></a>
<FONT color="green">427</FONT>         * See http://issues.apache.org/jira/browse/BEANUTILS-291<a name="line.427"></a>
<FONT color="green">428</FONT>         */<a name="line.428"></a>
<FONT color="green">429</FONT>        private static class MappedMethodReference {<a name="line.429"></a>
<FONT color="green">430</FONT>            private String className;<a name="line.430"></a>
<FONT color="green">431</FONT>            private String methodName;<a name="line.431"></a>
<FONT color="green">432</FONT>            private Reference methodRef;<a name="line.432"></a>
<FONT color="green">433</FONT>            private Reference classRef;<a name="line.433"></a>
<FONT color="green">434</FONT>            private Reference writeParamTypeRef0;<a name="line.434"></a>
<FONT color="green">435</FONT>            private Reference writeParamTypeRef1;<a name="line.435"></a>
<FONT color="green">436</FONT>            private String[] writeParamClassNames;<a name="line.436"></a>
<FONT color="green">437</FONT>            MappedMethodReference(Method m) {<a name="line.437"></a>
<FONT color="green">438</FONT>                if (m != null) {<a name="line.438"></a>
<FONT color="green">439</FONT>                    className = m.getDeclaringClass().getName();<a name="line.439"></a>
<FONT color="green">440</FONT>                    methodName = m.getName();<a name="line.440"></a>
<FONT color="green">441</FONT>                    methodRef = new SoftReference(m);<a name="line.441"></a>
<FONT color="green">442</FONT>                    classRef = new WeakReference(m.getDeclaringClass());<a name="line.442"></a>
<FONT color="green">443</FONT>                    Class[] types = m.getParameterTypes();<a name="line.443"></a>
<FONT color="green">444</FONT>                    if (types.length == 2) {<a name="line.444"></a>
<FONT color="green">445</FONT>                        writeParamTypeRef0 = new WeakReference(types[0]);<a name="line.445"></a>
<FONT color="green">446</FONT>                        writeParamTypeRef1 = new WeakReference(types[1]);<a name="line.446"></a>
<FONT color="green">447</FONT>                        writeParamClassNames = new String[2];<a name="line.447"></a>
<FONT color="green">448</FONT>                        writeParamClassNames[0] = types[0].getName();<a name="line.448"></a>
<FONT color="green">449</FONT>                        writeParamClassNames[1] = types[1].getName();<a name="line.449"></a>
<FONT color="green">450</FONT>                    }<a name="line.450"></a>
<FONT color="green">451</FONT>                }<a name="line.451"></a>
<FONT color="green">452</FONT>            }<a name="line.452"></a>
<FONT color="green">453</FONT>            private Method get() {<a name="line.453"></a>
<FONT color="green">454</FONT>                if (methodRef == null) {<a name="line.454"></a>
<FONT color="green">455</FONT>                    return null;<a name="line.455"></a>
<FONT color="green">456</FONT>                }<a name="line.456"></a>
<FONT color="green">457</FONT>                Method m = (Method)methodRef.get();<a name="line.457"></a>
<FONT color="green">458</FONT>                if (m == null) {<a name="line.458"></a>
<FONT color="green">459</FONT>                    Class clazz = (Class)classRef.get();<a name="line.459"></a>
<FONT color="green">460</FONT>                    if (clazz == null) {<a name="line.460"></a>
<FONT color="green">461</FONT>                        clazz = reLoadClass();<a name="line.461"></a>
<FONT color="green">462</FONT>                        if (clazz != null) {<a name="line.462"></a>
<FONT color="green">463</FONT>                            classRef = new WeakReference(clazz);<a name="line.463"></a>
<FONT color="green">464</FONT>                        }<a name="line.464"></a>
<FONT color="green">465</FONT>                    }<a name="line.465"></a>
<FONT color="green">466</FONT>                    if (clazz == null) {<a name="line.466"></a>
<FONT color="green">467</FONT>                        throw new RuntimeException("Method " + methodName + " for " +<a name="line.467"></a>
<FONT color="green">468</FONT>                                className + " could not be reconstructed - class reference has gone");<a name="line.468"></a>
<FONT color="green">469</FONT>                    }<a name="line.469"></a>
<FONT color="green">470</FONT>                    Class[] paramTypes = null;<a name="line.470"></a>
<FONT color="green">471</FONT>                    if (writeParamClassNames != null) {<a name="line.471"></a>
<FONT color="green">472</FONT>                        paramTypes = new Class[2];<a name="line.472"></a>
<FONT color="green">473</FONT>                        paramTypes[0] = (Class)writeParamTypeRef0.get();<a name="line.473"></a>
<FONT color="green">474</FONT>                        if (paramTypes[0] == null) {<a name="line.474"></a>
<FONT color="green">475</FONT>                            paramTypes[0] = reLoadClass(writeParamClassNames[0]);<a name="line.475"></a>
<FONT color="green">476</FONT>                            if (paramTypes[0] != null) {<a name="line.476"></a>
<FONT color="green">477</FONT>                                writeParamTypeRef0 = new WeakReference(paramTypes[0]);<a name="line.477"></a>
<FONT color="green">478</FONT>                            }<a name="line.478"></a>
<FONT color="green">479</FONT>                        }<a name="line.479"></a>
<FONT color="green">480</FONT>                        paramTypes[1] = (Class)writeParamTypeRef1.get();<a name="line.480"></a>
<FONT color="green">481</FONT>                        if (paramTypes[1] == null) {<a name="line.481"></a>
<FONT color="green">482</FONT>                            paramTypes[1] = reLoadClass(writeParamClassNames[1]);<a name="line.482"></a>
<FONT color="green">483</FONT>                            if (paramTypes[1] != null) {<a name="line.483"></a>
<FONT color="green">484</FONT>                                writeParamTypeRef1 = new WeakReference(paramTypes[1]);<a name="line.484"></a>
<FONT color="green">485</FONT>                            }<a name="line.485"></a>
<FONT color="green">486</FONT>                        }<a name="line.486"></a>
<FONT color="green">487</FONT>                    } else {<a name="line.487"></a>
<FONT color="green">488</FONT>                        paramTypes = STRING_CLASS_PARAMETER;<a name="line.488"></a>
<FONT color="green">489</FONT>                    }<a name="line.489"></a>
<FONT color="green">490</FONT>                    try {<a name="line.490"></a>
<FONT color="green">491</FONT>                        m = clazz.getMethod(methodName, paramTypes);<a name="line.491"></a>
<FONT color="green">492</FONT>                        // Un-comment following line for testing<a name="line.492"></a>
<FONT color="green">493</FONT>                        // System.out.println("Recreated Method " + methodName + " for " + className);<a name="line.493"></a>
<FONT color="green">494</FONT>                    } catch (NoSuchMethodException e) {<a name="line.494"></a>
<FONT color="green">495</FONT>                        throw new RuntimeException("Method " + methodName + " for " +<a name="line.495"></a>
<FONT color="green">496</FONT>                                className + " could not be reconstructed - method not found");<a name="line.496"></a>
<FONT color="green">497</FONT>                    }<a name="line.497"></a>
<FONT color="green">498</FONT>                    methodRef = new SoftReference(m);<a name="line.498"></a>
<FONT color="green">499</FONT>                }<a name="line.499"></a>
<FONT color="green">500</FONT>                return m;<a name="line.500"></a>
<FONT color="green">501</FONT>            }<a name="line.501"></a>
<FONT color="green">502</FONT>    <a name="line.502"></a>
<FONT color="green">503</FONT>            /**<a name="line.503"></a>
<FONT color="green">504</FONT>             * Try to re-load the class<a name="line.504"></a>
<FONT color="green">505</FONT>             */<a name="line.505"></a>
<FONT color="green">506</FONT>            private Class reLoadClass() {<a name="line.506"></a>
<FONT color="green">507</FONT>                return reLoadClass(className);<a name="line.507"></a>
<FONT color="green">508</FONT>            }<a name="line.508"></a>
<FONT color="green">509</FONT>    <a name="line.509"></a>
<FONT color="green">510</FONT>            /**<a name="line.510"></a>
<FONT color="green">511</FONT>             * Try to re-load the class<a name="line.511"></a>
<FONT color="green">512</FONT>             */<a name="line.512"></a>
<FONT color="green">513</FONT>            private Class reLoadClass(String name) {<a name="line.513"></a>
<FONT color="green">514</FONT>    <a name="line.514"></a>
<FONT color="green">515</FONT>                ClassLoader classLoader = Thread.currentThread().getContextClassLoader();<a name="line.515"></a>
<FONT color="green">516</FONT>    <a name="line.516"></a>
<FONT color="green">517</FONT>                // Try the context class loader<a name="line.517"></a>
<FONT color="green">518</FONT>                if (classLoader != null) {<a name="line.518"></a>
<FONT color="green">519</FONT>                    try {<a name="line.519"></a>
<FONT color="green">520</FONT>                        return classLoader.loadClass(name);<a name="line.520"></a>
<FONT color="green">521</FONT>                    } catch (ClassNotFoundException e) {<a name="line.521"></a>
<FONT color="green">522</FONT>                        // ignore<a name="line.522"></a>
<FONT color="green">523</FONT>                    }<a name="line.523"></a>
<FONT color="green">524</FONT>                }<a name="line.524"></a>
<FONT color="green">525</FONT>    <a name="line.525"></a>
<FONT color="green">526</FONT>                // Try this class's class loader<a name="line.526"></a>
<FONT color="green">527</FONT>                classLoader = MappedPropertyDescriptor.class.getClassLoader();<a name="line.527"></a>
<FONT color="green">528</FONT>                try {<a name="line.528"></a>
<FONT color="green">529</FONT>                    return classLoader.loadClass(name);<a name="line.529"></a>
<FONT color="green">530</FONT>                } catch (ClassNotFoundException e) {<a name="line.530"></a>
<FONT color="green">531</FONT>                    return null;<a name="line.531"></a>
<FONT color="green">532</FONT>                }<a name="line.532"></a>
<FONT color="green">533</FONT>            }<a name="line.533"></a>
<FONT color="green">534</FONT>        }<a name="line.534"></a>
<FONT color="green">535</FONT>    }<a name="line.535"></a>




























































</PRE>
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